UK-US relations have soured after the leak of diplomatic e-mails from the UK ambassador. The leaked mails were published in a British newspaper. They had very negative and critical comments about President Trump's White House. The ambassador wrote: "We don't really believe this administration is going to become substantially more normal; less dysfunctional; less unpredictable; less faction riven; less diplomatically clumsy and inept." He also said Mr Trump's policy on Iran was "incoherent" and "chaotic". A British official called the leak an act of "unforgivable treachery".
The USA and the UK describe their friendship as a "special relationship". The UK needs this friendship as well as a trade deal with the USA after it leaves the European Union. The UK's Prime Minister Theresa May has "full faith" in Sir Kim as ambassador but did not agree with his comments. Her spokesman said the leak was "absolutely unacceptable". Donald Trump retaliated and said Sir Kim "has not served the UK well." He tweeted: "I do not know the Ambassador, but he is not liked or well thought of within the US. We will no longer deal with him."